Radisphere National Radiology Group raises another $5 million in equity

Radisphere National Radiology Group Inc. has raised another $5 million in equity financing, capping a $15 million investment round.
Three investors contributed to the investment round, according to documents Radisphere filed with the U.S. Securities and Exchange Commission. The company on Feb. 6 filed a document announcing the first $10 million raised, and on March 23 it amended that document to include the other $5 million.
Radisphere's executive team is based in Westport, Conn., but the company's largest office is in Beachwood. Founded in 2001, Radisphere provides remote and on-site radiology services to community hospitals.
A company official declined to provide additional details about the investment.
Radisphere has raised $55 million in financing over the past three years. It closed a $27.5 million round in November 2010 and a $12.5 million round in August 2009.